CONDITION PROBABLE CAUSE(S)
Lift trav
ver ow
ation
d) Low or restricted oil flow from oil reservoir
els in DOWN direction a) Lift binding on rails/improper lubric
y sl ly b) Rails not plumb
c) Faulty motor unit
Fu t
b) Rails not plumb causing lift to bind in UP direction
c) Incorrect wire gauge from disconnect to unit
f) Acme Drive Screw requires oil
ses a disconnect blown a) Incorrect size (amperage) fuse
d) Unit not on a separate 115 V 15 amp circuit
e) Direct short circuit on 115 V side
Lift will not travel in UP direction a) Platform on back-up nut
b) Normal limit UP switch activated or faulty, loose wire
ns
d) Final limit switch activated or faulty, loose wire
nections
oken belts
f) Sheaves misaligned
connectio
c) "SC" or "DCL" LEDs not lit
con
e) Br
Interlock/Electric strike solenoids
not energizing when lift is at floor
a) Door zone switch not activating/
b) Improper lock wiring (E & F con
level
loose wire connections
nections)
c) Faulty door zone switch
d) Fuse 2 blown (2 amp)
e) Solenoids binding or defective
Exce
b) Guide shoes too tight on rails
c) Rail bracket mounting bolts loose
d) Not enough oil on drive screw
ssive machine vibrations a) Lack of lubrication on rails
FINAL TEST
he following features and functions must be verified as operational.
)
Cab Key Switch
Verify that the buttons on the cab station are inoperable, when the key is in the OFF
position. When the key is turned ON, the landing buttons should become inoperable.
)
Landing Controls (Optional)
Verify that the control is inoperable, when the key switch is in the OFF position. Also
verify that the controls are inoperable, whenever a landing door or cab gate are left in the
OPEN position.
)
Emergency Stop/Alarm (Optional)
Press the emergency stop button to verify that all power is removed from the unit, and the
cab comes to a complete stop. Press the alarm button to ensure that it activates.
T
1
2
3
45
To Next Page
Loading...